Convert IOCA to FITS

IOCA to FITS made simple. Add files or folders, pick your settings, click Convert. reaConverter handles the rest — even thousands of files.

Got a folder full of IOCA files? reaConverter batch converts them to FITS in minutes, not hours. Local processing means instant results, even with thousands of files.

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IOCA to FITS
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How to Convert Multiple IOCA Files to FITS?

1. Download and Install reaConverter

reaConverter installs quickly on any Windows PC. No dependencies, no bloatware — just a clean setup that's ready to use immediately.

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Install reaConverter

2. Load your IOCA files

Start reaConverter and add your .ioca files. The software processes everything locally, so your files never leave your computer.

Use drag-and-drop, folder browser, or right-click conversion from Explorer.

Load your IOCA files into reaConverter

3. Select FITS as output format

Select FITS from 700+ supported output formats. Choose your destination folder and adjust settings to match your needs.

Select FITS as output format

4. Start IOCA to FITS conversion

Click Convert to start the batch. reaConverter processes files quickly and shows you the status of each one.

Start Conversion

Once done, reaConverter shows a summary. Click 'Show converted files' to jump straight to your FITS output.

IOCA to FITS Converter

reaConverter offers the fastest, simplest solution for converting your IOCA files into FITS in seconds - all files processed on your PC for maximum privacy and speed.

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Do more with your files

Converting IOCA files for use in a workflow? reaConverter offers many ways to process files, so you can customize them according to your requirements.

Our range of editing options includes auto-processing options such as auto-rotate, auto-crop, watermarking and more. Change Color Space, copy Metadata, set DPI, manage ICC Profile, control Bit Depth.

Conversion features
Image editing

User Reviews

Average User Rating:
Last updated on January 17, 2026
"Essential for our astroimaging pipeline! reaConverter perfectly handles FITS files from our research telescope, preserving all WCS coordinates and photometric data during batch conversion to TIFF. Now we process 100+ deep-sky exposures nightly without losing critical metadata for our exoplanet studies!"
Joseph Wilson
Joseph Wilson
Satisfied Customer
"reaConverter makes FITS conversion incredibly easy. We batch convert astronomical images to standard formats for presentations and analysis, all automated through the command-line. It’s fast, reliable, and handles large datasets without issues."
Laura N.
Laura N.
Astrophysics Research Assistant
"This software just works! My old laptop can’t handle Photoshop, but reaConverter flies through conversions without breaking a sweat. Wi-Fi gone? Still strong!"
Robert Williams
Robert Williams
Happy User
"Rare software that actually does it all! Converts anything, beautiful interface, and never lets me down. A must-have!"
Henry R.
Henry R.
Happy User
"For cross-platform compatibility, JPEG remains the gold standard. reaConverter’s precision conversions ensure perfect results every time, whether for presentations, websites, or client deliverables."
Paul Baker
Paul Baker
Happy User
"Finally an app that actually opens my weird files! Saves me from format frustration daily."
Kyle Brooks
Kyle Brooks
Happy User

IOCA to FITS Conversion: FAQ

What are IOCA files?

IOCA (Image Object Content Architecture) is a raster graphics format developed by IBM for use in its Advanced Function Presentation (AFP) document system. It was primarily used in mainframe and midrange computing environments (such as IBM AS/400 and zSeries) for storing and printing high-quality images within documents.

What are FITS files?

The FITS (Flexible Image Transport System) format is a standard format used particularly for storing, transferring and processing scientific images from fields such as astronomy. FITS was first launched as an open standard in the early 1980s and has gone through several subsequent upgrades. FITS files contain not just images, but also data related to photometry and spatial calibration, and information about the origin of the image. Similar formats include FIT and FTS.

Can reaConverter convert IOCA to FITS?

Yes! reaConverter instantly converts .ioca to .fits with perfect quality preservation. With its batch processing feature, you can convert multiple files at once in just a few clicks. You can even convert images directly from Windows Explorer using the right-click menu — fast and convenient.

Can I convert IOCA to FITS online?

If you only need to convert a few IOCA files to FITS format, feel free to try our free online free online IOCA to FITS converter — perfect for small batches with no installation needed!

How can I turn IOCA files into FITS on my computer?

The best way to change IOCAs to FITSs on your PC is to install a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch files conversions, including conversion from IOCA to FITS.

How can I automate IOCA to FITS files conversion?

reaConverter supports all the most useful automation features such as right-click сonversion and Watch Folders for the most efficient automated files conversion in any software of this type.

Is there a way to convert IOCA files to FITS using the command prompt?

reaConverter provides full access to all its features via Windows command line, including a high-performance command-line ioca to fits converter for batch processing.

What else can I do with reaConverter?

Change format settingsChange DPIConvert vector filesChange color spaceConvert GIS files

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